This study critically analyzes women"s agency in protesting gold mining corporation in Central Sumba, Indonesia. Like other mining areas, the gold mining activities were rejected by the indigenous inhabitants. Narratives of the anti-mining are many, but they did not record the women's involvement. The research applies a postcolonial feminist ethnography method. The imbalance of power relations places women"s narratives as hidden. The postcolonial feminist ethnography reveals the hidden struggle of indigenous women; it uncovers various messages of life protection and conservation. Their experience reflects their knowledge of local harmony and resilience. It suggests that women have capacity to clearly explain the root of their anti-mining acts. Women hold the legacy of knowledge to protect natural resources from their female ancestors through spoken language (tutur). Women are not worried about the depletion of gold minerals, but they are more concerned about losing their water sources. Caring for a spring water means establishing themselves as agents for conserving natural resources.